Lightweight mountaineering shoe. Sturdy, flexible, can be worn all year round with a bit of patience in the summer. Doesn't slip anywhere! Perfect with snowshoes.
However, for mountaineering in Greece, I would choose something semi-rigid and something lightweight for summer. After my experiences.

The shoe slips a lot, retains a lot of moisture inside the foot, and is extremely cold even at temperatures above zero; the only positive is its beauty

They were tested on hiking in snow and mountains. It keeps the foot quite stable and doesn't let it move around. I walked in snow up to my knee and nothing went through. I just felt some moisture inside the sock, which is normal. They are quite lightweight, but I think the sole is a bit hard compared to La Sportiva. It is a good choice with decent construction quality

The boots are exactly like in the pictures!
Light and comfortable in relation to their construction!!!
As for the size, I got them the same as the sports shoes
And they are great!!! We'll see about their durability.
I will come back!!!!

Yesterday I bought the shoes, they are very comfortable. I haven't taken them for extreme hiking yet, I will update later with more details about this specific shoe, but they look very good. I came back and I have to say that even in the snow, nothing gets in, and they hold your foot very well on the ice. Don't risk it, they slip, you might fall. And one more thing, they hit me a little on the inner ankle